Effect of supplementation with 20:3(n − 6), 20:4(n − 6) and 20:5(n − 3) on the production of prostaglandins E and F of the 1-, 2- and 3-series in turbot (Scophthalmus maximus) brain astroglial cells in primary culture

Citation

Bell JG, Tocher DR & Sargent JR (1994) Effect of supplementation with 20:3(n − 6), 20:4(n − 6) and 20:5(n − 3) on the production of prostaglandins E and F of the 1-, 2- and 3-series in turbot (Scophthalmus maximus) brain astroglial cells in primary culture. Biochimica et Biophysica Acta (BBA) - Lipids and Lipid Metabolism, 1211 (3), pp. 335-342. https://doi.org/10.1016/0005-2760%2894%2990158-9

Abstract
The production of prostaglandins E and F of the 1-, 2- and 3-series was determined in primary cultures of turbot (Scophthalmus maximus) brain astroglial cells after supplementation with 25 /gmM dihomo-γ-linolenic (20:3(n − 6)), arachidonic (20:4(n − 6)) and eicosapentaenoic (20:5(n − 3)) acids. Supplementation by 20:3(n − 6), 20:4(n − 6) and 20:5(n − 3) for 4 days significantly increased the percentages of the respective acids in the total cellular lipid of the turbot astrocytes. The predominant prostaglandins formed by turbot astrocytes in response to stimulation with calcium ionophore A23187 were prostaglandin E2 and prostaglandin F2α under all experimental conditions. The production of prostaglandin E2 was stimulated 2.6-fold, but prostaglandin F2α production was unaffected after supplementation of cultures with 20:4(n − 6). However, prostaglandin E2 production in astrocytes was significantly inhibited 3- and 4-fold, and prostaglandin F2α was inhibited 1.6- and 14.6-fold by supplemention with 20:3(n − 6) and 20:5(n − 3), respectively. Supplementation with 20:3(n − 6) also significantly increased the production of prostaglandin E1 (almost 4-fold) and prostaglandin F1α (2.2-fold) whereas supplementation with 20:5(n − 3) did not significantly increase the production of prostaglandin E3. Prostaglandins F3α and F1α but not prostaglandin E1 were significantly reduced in 20:5(n − 3)-supplemented cultures.

Keywords
TURBOT; ASTROCYTE; PRIMARY CULTURE; PROSTAGLANDIN; POLYUNSATURATED FATTY ACID

Journal
Biochimica et Biophysica Acta (BBA) - Lipids and Lipid Metabolism: Volume 1211, Issue 3

People

Professor Gordon Bell

Emeritus Professor, Institute of Aquaculture